Colour normal pilots can safely name colours.
You may want to tell your employer you sometimes name colours incorrectly - specially those washed out colours. So you would be 'dangerous' at 'calling' a fashion parade.
You could assure them you know when a light is on or off irrespective of what colour it appears to be and remind them that in an aviation situation where colour is used to convey a message that there are sufficient other cues to be sure of the meaning.
Oh and 25 years of CVD pilots flying at every level without issue cant be ignored.